S50B32 Euro not running clean.

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  • Mr. Horsepower
    Grease Monkey
    • Jun 2009
    • 386

    #31
    FINALLY!!!!!
    After changing;
    -TPS
    -Intake temp sensor
    -Water temp sensor
    -Two coils with boots
    -Spark plugs
    -Crank sensor
    -Both cam sensors
    -Dr.Vanos rebuildt Vanos
    -Both o2 sensors

    I noticed that the DME was generally hot, more hot than I wanted it to be.
    Diagnostic was showing no intake temp signal, so intake temp sensor was changed, but there was still a fault on the sensor. I then checked the wiring at everything was ok.
    I then got a request from a guy that was building a PnP V-Pec v44 for the S50B32, he needed a car to test it on, and I was closest. So he visited and plugged in, and then he got normal reading from the intake temp sensor.

    That got me thinking.
    So at last I got to try another S50B32 DME, and BANG!!! it runned as hell when still warm!
    I got lucky and sourced a used DME, flashed it with Alpha-N, performance software on vanos and ignition/fuel, remove v-max and EWSII.

    Finally I have gotten the felling of how a S50B32 SHALL run, and it runs like hell! The DME is still in the self tune phase with the new software, probably takes about 20-30 hours before it has tuned it self completely.

    I never would have thought that the intake temp had so much affect on the engine, since it also reads temp from the MAF as well.

    Cheers
    1987 BMW E30 M3 RB26
    2016 VW Polo 1.2 TSI R-Line

    Originally posted by 5spoke
    Fucking norway and your sick clean ass e30's! Yes i am yelling!

    Comment

    • DisgustipatedAP1
      E30 Addict
      • Mar 2012
      • 421

      #32
      Good job. This should help out S50B32 swappers in the future as well.
      RIP: Delphin '89 E30 with S50 swap and lots of goodies :'(

      Then: '04 Evo 8 RS, 500 whp/420 wtq 2900 lb E85 AWD turbo shits 'n giggles

      Now: 2003 BMW M5 in Sterling Gray

      Comment

      • Mr. Horsepower
        Grease Monkey
        • Jun 2009
        • 386

        #33
        Difference:

        Before



        After (car is a bit ligther as well)

        1987 BMW E30 M3 RB26
        2016 VW Polo 1.2 TSI R-Line

        Originally posted by 5spoke
        Fucking norway and your sick clean ass e30's! Yes i am yelling!

        Comment

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